The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

OM020.04

Country / Post Oman
Date of Issue 5 June 2004
Primary theme Fauna
Subject WWF - Arabian Leopard
Width 44.0 mm
Height 26.5 mm
Denomination 0.05 OMR
Number in set 4 (show set)
Layout/Format sheet of 16
Perforations 13.8 by 13.8
Stamp issuing authority Ministry of Transport & Communications Sultanate of Oman
Printer OSD Austria
Connect to the web shop of the issuing stamp authority